Fago B
THE CHINA MAIL, THURSDAY, JUNE 30, 1949.
TURNER
Marine DIESELS
TURNER INDUSTRIAL & MARINE
DIESEL ENGINES
72-15-30 H.P. 1500 RPM STOCKS CARRIED
SOLE AGENTS
YU TUNG TẠI LTD.
YORK BLDG.
ENGINEERING DETT.
TEL: 33145.
FIRE EXTINGUISHER
VALOR FOAMERA
The Valor Co., Ltd., Birmingham.
AND CHARGES
Stocks carried by
A. MING & CO., LTD.
105, Des Voeux Rd., C.
} & I
(Opp. Central Market)
司公限有
Telst 20147 23012
ENGINEERING PAGE
The All-Round Marconi Portable pH Meter
Manchester Machinery Exhibition
Scientific instruments are no longer to be found ox- clusively in the laboratory and apparatus of the greatest pracision is in everyday use în factory, workshop and farm.
or
Kn
Australia
Designs Respirators
By Susan Barrio.
A miniature respirator, de- signed specially for the treat- ment of newly-born bables, is being used in.Australian hospi~ tals to save infants who have difficulty in breathing at birth. Known as the Waterworth Infants'. Respirátor, it is un- usually small and light, and is casy to operate. It can be moved simply and quickly by one person from one ward to designed another, and in so that it needs little adjustment, so a newly-born infant can be placed in it without delay.
The "ron lung" was designed· by Mr, Ion Waterworth, of Hobart, the capital of Australia's island State of Tasmania, in the South of the continent.
It follows therefore that there are many relatively unskilled instrument operators and that, pro- perly to satisfy their requirements the instru- ments themselves must combine ease of mani- pulation with really dependable performance. Among electronic instru, or for monitoring a fermentation The Textilo Machinery Ex- hibition to be held at Belle Vue, menta few are so universally process-the switch can be locked Manchester, in October will be employed as the pH meter and down by a press-and-twist-motion.
River Pollution the first Exhibition of its kind in it is in answer to the demand
Pure water hus A for a simple, easy-to-read yet
mid-scale Britain for the past 11 years.
the value of pH 7 (noutral), and there It might fairly be claimed that, accurate instrument that as an international Exhibition, it Marconi portable direct read-are numerous processes which in- will be the first of its kind in any ing pH Meter has been pro- volve the adjustment of solutions
to this valuo, Where
add country during the same period. duced.
The pH Meter, type TF 889, wash is required for breaking- down powers-as In the manufac Machinery of 20 Continental and shows the degree of acidity
ture of custard powder, dry colour, American manufacturera will be alkalinity (hydrogen ion concen-
or in the treatment of clay powder exhibited in addition to a fully tration) of aqueous solutions. It is for toilet proparations it is
runge of all the invaluable in such diverse activi-er ropresentative
generally necen alkali.
to neutrallse lending British textile machinists' ties us food production, electro-by means of an products.
nowake disposal, textile
Neutralising is also carried out sewers are discharged into rivers,
now used at six other big canals and other places accessible:
the to publle
men's Hospital, or subject to by-laws Australien hospitals, including the regarding contamination.
Crown Street Women's
mater- the biggest public Sydney, the prac In the past it has been Specifically, pll determines the tice either to take samples from nity hospital in New South Wales. The respirator is similar to setting properties of jama and the river to the laboratory or to
used in jellies, is an indication of the pre-instal a protected elecrode system those of standard size
the world, but sence of lactic acids in carcass connected by special cable to a hospitals all over
indicator but with the its lightness, simplicity, and afża the back- ment-information essential to the remote meat canners-and is a major in- Marconi portable pH Meter the 1t can be fitted into
car) make it fluence in the clotting of milk and frequent checking of pH on the beat of a motor the mellowing of the curd in spot and under any circumstances particularly useful.
operated on is an easy matler,
It ta electrically cheese making
In of these operations, a Additionally, the instrument is 240 volts alternating current but
most
power. rapid measurement of pH is re-extremely useful as an inspection can be adapted to any quired, often in conditions for re- "tool" to check the working of Made of light wood, the Water- worth intonia respirator is en- moved from those of the labora- recorders and controllers. tory.
amelled inside and out, and has a bane 2 foot 4 inches by 1 foot 14 inch, I's highest point is 1 foot 10% inches and it weighs 87
He had the co-operation of Dr. W. K. McIntyre, of Launceston, Tasmania, who first installed and the general hospital there.
ing, printing, tanning, rope when effluents from factories or used it about eight years ago in
This exhibition will be the large-
brewing, paint manufac est ever staged in England. With
chemical and cosmetic pro- 60,000 equare feet of space already duction, electricity generating, bil fully booked, and with stand front and plant analysis and as many age totalling a mile in length. It
will be half as big again as the very successful orfiibition held in Manchester In 1038,
Throughout the exhibition period special arrangements will be made for the reception of visitors at the Showrooms of all the TMM group of companies where there will be facilities for the inspection of all products not shown at the exhibi tian.
World-wide interest is apparent In the number of customers who already have expressed their in- tention to visit the exhibition, and In the arrangements being made bry
the exhibition authorities for the reception of organised trade Rroups from various countries in- cluding, at the time of writing, Sweden. Denmark, Holland, Nor- way, Franco and Italy.
more.
A Practical Dosign
pH In Soil
moro prov
ba.
is
Internally Heated
д
The pH value of oil, which con- The now Marconi pH Meter: is siderably affects plant cultivation, a practical, general purpose in can be determined with the Mar trument. It is light, portable and coni portable pH Meter simply by robust, yet capable of reliable shd inserting the electrodes into melet even in the sall; reasonable dilution with dis- accurato measurement hands of
not tilled water will
seriously operator without tilleg RO
The respirator is internally the pH special knowledge. It is battery affect
value
hoated by two 60-watt Inmps, operated and direct reading over Normally, vegetable garden soil In the matter of accommodation the usoful rangee to li pH with should be above pH, but above and the temperature is indicated
by a thermometer. discrimination
TpH plant disease for visitors, we are able to offer a
PH of 0.05
Tho
is indicated in vacuum lent than in the acid soils below The electrode system 18 some assistance and, at the same
pressure slowed within
OpH. in the cultivation of flowery inches of water on A com.
maximum vacuum geniously tine. would ask for your со
4 inches of water. operation. We have been able to partment of the case. The stan- the same pH range will give the gauge, the make a certain number of hotel dard glass electrode and reference best average results, but local
Dr. Maintyre, joint designer two variation in advantageous for for the exhibition half-cell are mounted in a reservations
generally period and, as far as we are able, picce moulded rubber assembly; few spoctal acid-tolerantes such as the instrument, says that a vacuum
sinall conifers, heaths, of 2% to 8% inches is
the degree of shall be happy to allocate these this protects the glasswork and some in accordance with our agents re- a not
holda solution in which the glass rhododendrons, azaleas and some adequate, and
vacuum can be controlled by a magnolina. commendations.
membrane is immersed to prevent
knob on the left-hand side of the deterioration while the instrument pH Of Toothpasto
respirator.
or. This adjustment allows is out of use.
The KC. Bung
for varying degrees of leakaga arrangement is convenient and
around the infant's neck. leakproof and the electrodes are easily replaced without the aid of tools.
But the available accommodation is strictly Umited, so we shall be glad if you would impress on in- tending visitore the necessity for very early Bottlements of their
being
میں
The infant les on a sloping tray, which can be taken out for cleaning. Under the front of the respirator there is a hinged foot, which, when lowered, brings the
A dental cream of low pH can cause serious damage it left in crevices of the teeth, while it the dentifrics is too alkaline corrosion of the metal tube occurs especially Controls are
provided for ad- when made of aluminium. justing temperature compensation. Measurements can be made by periodically checking scale applying the electrodes of the por-
to a level position, making it accuracy and resetting battery table pH Meter directly to the
to put the baby. In the conditions,
but only one controls toothpaste. used
ed during
the actual measuribg pH And Plastics
Australia has been prominent procces To make a measurement Soya bean protein, used in the in the development of "Iron lung." the electrodes are immersed manufacture of synthetic resins The first modern types of we can rely on your best erden-edlo adjusted to the appropriatoj maximum yield la obtained at pH | Australian, Mr. T... D. Both, OBE, buffer solution and the motor tracted The "lung, were perfected by an
plans, You can take it that wo shall do our utmost to meet all requests for reservations though we cannot, of course, give any guarantees in advance.
Much will depend on how soon you can persuade your friends to make up their
minds, and in this we know
Yours.
We are
confident that, from
every standpoint, this is going to be a most important occasion and that, with your active co-operation, our efforts to make the exhibition a great success 'will not go un- rewarded.
BUILDING SUPPLIES
“TÚRNALL”
"CRANE"
"YORKSHIRE” "CEMENTONE"
"PUDLO"
"HEATRAE"
["EXPAMET”
"AL"
"FOAMITE "NEWALLS"
"OZONO"
"FALCO"
STOCKS AVAILABLE
"ELECTROMATIC" "RELIANCE" "PHILPLUG" "LEE HOWL" "HURSEAL". “RUBBERLOCK" "CRITTALL”
“CHATWOOD”.
Asbestos Coment Products. Boilers, Domostic.
Copper Tubos & Fittings..
Comant Colouring Powder. Comont Waterproofing Powder Electric Water Heaters. Expanded Motal.
Fire Placos.
Fire Fighting Equipment.
Insulation: Heat, Cold & Sound.
Ozone Generators.
Oil Cooking Ranges.
Oil Burners, Fully Automatic.
Oil Burners, Range.
Plugging Materials,
Radiators, Oil Loaded Electric.
Pumping Equipment.
Rubber Flooring Tiles.
i
Windows & Doors, Metal.,
Vault Doors & Safes.
DODWELL & CO., LTD.
MACHINERY & CONTRACTING DEPT.
Mong Tieng Shanghai Hinh Bulldog
Hot line
value with the 'Set Buffer control The test solution is then intro cuced in place of the buffer and a reading obtained on the meter. Continuous Measurements
an
2 and the minimumn at pH 4.2. of Sydney, who introduced them Extraction with alkali increases in
1938 during Brain in from pll 7 upwards.
infantile paralysis epidemic. Photography
were known as the Both Cabinet Hydrogen-ion concentration has Respiratore.
Lord Mufleld was so impressed A Fress to Read' switch is an important effect on the forms- located in the middle of the election of emulsions and on the site by their value, that ho gave the tro-meter unit which, when presa of the silver halldo particles money to instal them in hospitals od, connects the electrodes to the dispersed within them,
all over the United Kingdom. electro-metor, and when released
The
action, or "harden- Similar "Fungs" are now used decentrots the electrodes between ing proaning aluminium or in most countries of the world
that random chromium salts measurements
hes Mr. Both the gelatin
since mide contribution la dependent
to scale readings aro eliminated, emulsion
upon another great When a continuous indication is acidity, while noutral ants also medical science, by designing an required-i.e. for neutralising, for exarcias a temporary "hardening electro-cardiagraph, simple enough Anding the end point in a titration, action-again a function of pH." to be used for bedsido diagnosis.
30
HERE ARE SOME OF THE
KM
· (KNAPP-MONARCH CO.)
The KM
SPEED MIXER:
MKM SPEED IRON
Telophone 26021.
GILMAN
on
KM
POP-UP TOASTER
His KM LIQUIDIZER
THERIPLESH FRUIT SETO
DOLDIERES
AT THE RICA
OFA
SWITCH
The KM WAFFLE BAKER
Why Production Goes Up
When VEELINK Goes On
THE ADJUSTABLE V-BELTÄ
You cannin couple, any-Ade- aired longth of beit from a real "of VeoLinke,
Less than soconda. ΠΟ
no need to keep largo inventory
a
of various pet lengths, . With VeeLink in reals, any V-belt can be-replaced in Iow
minutes.
1
It takes only few minutes to Justali VeeLink
on
provides
the driva/ That's why Link worthwhile aY- wor ings
tion time. You Link, bella can
be removed rätt old machines and easily installöð on others 'in' opěrás tion.
VeeLink V-belt stays on VeeLink
ringt! Hak
construction pro vides quick, easy tension
adjust tens meat to
achinery run, ning at full spend and productivity, Slide rall pivoted
bases are needed
Stocks Of All Sixos Available
mot
Sole Agents - KIU FQONG TRADING CO.
'26, Connaught Road, C.
BRC
FABRIC
ELECTRICALLY CROSS-WELDED
STEEL WIRE. MESH
IN ROLLS OR SHEETS
28409
FOR CONCRETE REINFORCEMENT,
Stook- Avaliable
DAVIE, BOAG
CO., LTD.
Agonis for
Chartered Bank Bldg.
BRITISH REINFORCED CONGRETE ENG. CO.LTD.
Look!
Electrical Products
that will INTRIGUE YOU
In
GILMANS' Gloucester Arcade Showroom
COMPANY LTD.
STELER
77017
PHILIPS
PHILIPS TL
LAMPS
Bale Agents: MANNERS ENGINLURING
Mörönulle Bank Bldg-
P0117
11
17